feat(ghostty): add ghostty module

modules/hm/desktop/ghostty.nix

@@ -0,0 +1,47 @@
+{
+  flake.modules.homeManager.desktop = {
+    programs.ghostty = {
+      enable = true;
+      enableZshIntegration = true;
+      systemd.enable = true;
+
+      settings = {
+        confirm-close-surface = false;
+        gtk-titlebar = false;
+        window-padding-x = 10;
+        window-padding-y = 10;
+        font-size = 12;
+        font-family = "JetBrainsMono Nerd Font";
+        theme = "poimandres";
+      };
+
+      themes = {
+        poimandres = {
+          background = "#0f0f0f";
+          foreground = "#a6accd";
+          cursor-color = "#f2eacf";
+          selection-background = "#1a1a1a";
+          selection-foreground = "#f1f1f1";
+          palette = [
+            "0=#252b37"
+            "1=#d0679d"
+            "2=#5de4c7"
+            "3=#fffac2"
+            "4=#89ddff"
+            "5=#fae4fc"
+            "6=#add7ff"
+            "7=#ffffff"
+            "8=#a6accd"
+            "9=#d0679d"
+            "10=#5de4c7"
+            "11=#fffac2"
+            "12=#add7ff"
+            "13=#89ddff"
+            "14=#fcc5e9"
+            "15=#ffffff"
+          ];
+        };
+      };
+    };
+  };
+}